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Many fields in the Patent Database use codes in place of U.S. state and territory names. Since searching for the full name of a state won't find a match since only the code exists in the data, this table will be helpful in your searches in state fields (such as Inventor and Assignee State).
| State | Code | State | Code | |||
|---|---|---|---|---|---|---|
| ALASKA | AK | MONTANA | MT | |||
| ALABAMA | AL | NEBRASKA | NE (NB) | |||
| ARKANSAS | AR | NORTH CAROLINA | NC | |||
| ARIZONA | AZ | NORTH DAKOTA | ND | |||
| CALIFORNIA | CA | NEW HAMPSHIRE | NH | |||
| COLORADO | CO | NEW JERSEY | NJ | |||
| CONNECTICUT | CT | NEW MEXICO | NM | |||
| CANAL ZONE | CZ | NEW YORK | NY | |||
| DISTRICT OF COLUMBIA |
DC | NEVADA | NV | |||
| DELAWARE | DE | OHIO | OH | |||
| FLORIDA | FL | OKLAHOMA | OK | |||
| GEORGIA | GA | OREGON | OR | |||
| HAWAII | HI | PENNSYLVANIA | PA | |||
| IOWA | IA | PUERTO RICO | PR | |||
| IDAHO | ID | RHODE ISLAND | RI | |||
| ILLINOIS | IL | SOUTH CAROLINA | SC | |||
| INDIANA | IN | SOUTH DAKOTA | SD | |||
| KANSAS | KS | TENNESSEE | TN | |||
| KENTUCKY | KY | TEXAS | TX | |||
| LOUISIANA | LA | UTAH | UT | |||
| MASSACHUSETTS | MA | VIRGINIA | VA | |||
| MARYLAND | MD | VIRGIN ISLANDS | VI | |||
| MAINE | ME | VERMONT | VT | |||
| MICHIGAN | MI | WASHINGTON | WA | |||
| MINNESOTA | MN | WISCONSIN | WI | |||
| MISSOURI | MO | WEST VIRGINIA | WV | |||
| MISSISSIPPI | MS | WYOMING | WY | |||
NOTE: The state abbreviation for Nebraska used in patents prior to July 4, 1978 was NB rather than NE.